My bro got his 2001 integra LS tuned with Crome Pro. It has 550cc RC injectors and a walboro 255lh fuel pump. When he first starts the car, the idle is rough and unstable (not to high RPMs though). After about 10 seconds, the car is smooth and is just like a normal car. Anyone knows why this happens? The tuner is doensn't know why this happens either.

Thank you

 

bump

 

its weird man.. a lot fo cars are weird in their own way. My old b16 did something similar.. cold starts were bad... but once its was on for about a 1 minute.. it would idle...

could be the cold start...